If a technician is ordered to deliver 30.units of radiation to a patient,at what distance should the source be if it delivers 85 units for a distance of 3.5 m?

Question

Quizplus · Accepted Answer

We can use the inverse square law for radiation to find the distance:

(distance₁/distance₂)² = (intensity₂/intensity₁)

Let distance₁ be the distance at which 30 units will be delivered, and distance₂ be 3.5 m where 85 units are delivered. We can plug in the values to get:

(distance₁/3.5)² = (85/30)

Solving for distance₁, we get:

distance₁ = 9.3 m

Therefore, the source should be at a distance of 9.3 m to deliver 30 units of radiation to the patient.

If a Technician Is Ordered to Deliver 30